Grant Hodges’s review published on Letterboxd:
This is top-tier Pixar right here. Like seriously, Monsters, Inc boasts:
-a ridiculously inventive premise
-one of the best and most creative climaxes of all-time
-a couple of my personally most hated villains
-a fantastic cast playing our ridiculously likable main duo
-some of my favorite running gags in cinematic history
-an ending that will legitimately make you cry
Oh, and it does all of this while burning through storylines faster than a season of The Good Place. Like seriously, the only reason Monsters University is a prequel is cause this movie leaves absolutely nowhere to go afterward.
I'm not going to say it's without its flaws. The beginning is definitely exposition-heavy, but when you're making a movie playing in this unique of a world, I think that's kind of a necessity. Plus, the movie pays off every little plot thread it sets up in that opening. So I can hardly complain.
If you somehow haven't seen this movie yet, I really don't know what you're doing. It's not just a great kids' movie but a great movie full-stop. And definitely marks a hell of a start to Pete Docter's career - immediately solidifying him as the best and most out-of-the-box filmmaker on Pixar's payroll.